Re: [OSGeo-Discuss] Any projects dealing with spatial joins?
Thanks Jodi for the news about Getools's Join support work in progress. The WFS 2.0 also specifies (optionally) temporal joins [1]. AFAIK Geotools already implements the Temporal Filters as specififed in FES 2.0, so I suppose the pieces are already there to further improve the proposal including temporal joins... giovanni [1] Par. 7.9.2.5.3.1 in OpenGIS Web Feature Service 2.0 Interface Standard 2011/6/30 Paolo Cavallini cavall...@faunalia.it Il 30/06/2011 00:30, Bruce, Bob (CON) ha scritto: Steve, I’m pretty sure that the QGIS project could use your talents as a C++ developer. They have been talking about table joins for awhile now. Table joins are implemented in QGIS now, in an efficient way. All the best. -- Paolo Cavallini: http://www.faunalia.it/pc ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Any projects dealing with spatial joins?
Il 30/06/2011 00:30, Bruce, Bob (CON) ha scritto: Steve, I’m pretty sure that the QGIS project could use your talents as a C++ developer. They have been talking about table joins for awhile now. Table joins are implemented in QGIS now, in an efficient way. All the best. -- Paolo Cavallini: http://www.faunalia.it/pc ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Any projects dealing with spatial joins?
Non spatial joins are done but spatial ones arn't.. Yet. I don't think it would be to hard to add - Nathan On 30/06/2011, at 5:19 PM, Paolo Cavallini cavall...@faunalia.it wrote: Il 30/06/2011 00:30, Bruce, Bob (CON) ha scritto: Steve, I’m pretty sure that the QGIS project could use your ta lents as a C++ developer. They have been talking about table joins for awhile now. Table joins are implemented in QGIS now, in an efficient way. All the best. -- Paolo Cavallini: http://www.faunalia.it/pc ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
[OSGeo-Discuss] Any projects dealing with spatial joins?
I'm looking for a project that I could contribute to as a C# (maybe Java) developer. In particular, I'm looking for something that focuses on ways to perform flexible spatial joins with some degree of efficiency. The simplest case I'm thinking of is where someone picks 2 or more database tables (associated with location), and asks to see a combined table. No maps involved, just tables (with the overlapping ground area thrown in if we're dealing with a polygon/polygon overlay). A more complex case would be a situation where someone wants to isolate an area based on the attributes in database tables, but doesn't have any advance idea of where to start looking. For example, I'm looking for a combination of A+B+C that covers at least 1000 hectares, but I'm starting with a database that covers the whole world. So to obtain some measure of efficiency, it would presumably be nice to have access to relatedgeneralizations of the location data. Is anyone working on this sort of thing? Steve___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Any projects dealing with spatial joins?
We have just been looking at a proposal for a Join interface (an extension to our Query) interface in GeoTools. If you would like to drop by geotools-devel you will find this to be a topical subject. The functionality of a join is part of the Web Feature Server 2.0 specification so you should find a lot of projects running into it as a concept over the next year. -- Jody Garnett On Thursday, 30 June 2011 at 8:25 AM, Steve Stanton wrote: I'm looking for a project that I could contribute to as a C# (maybe Java) developer. In particular, I'm looking for something that focuses on ways to perform flexible spatial joins with some degree of efficiency. The simplest case I'm thinking of is where someone picks 2 or more database tables (associated with location), and asks to see a combined table. No maps involved, just tables (with the overlapping ground area thrown in if we're dealing with a polygon/polygon overlay). A more complex case would be a situation where someone wants to isolate an area based on the attributes in database tables, but doesn't have any advance idea of where to start looking. For example, I'm looking for a combination of A+B+C that covers at least 1000 hectares, but I'm starting with a database that covers the whole world. So to obtain some measure of efficiency, it would presumably be nice to have access to related generalizations of the location data. Is anyone working on this sort of thing? Steve ___ Discuss mailing list Discuss@lists.osgeo.org (mailto:Discuss@lists.osgeo.org) http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
RE: [OSGeo-Discuss] Any projects dealing with spatial joins?
Steve, I'm pretty sure that the QGIS project could use your talents as a C++ developer. They have been talking about table joins for awhile now. Did you know that there is an OSGEO .Net user group now? Bob ** **Bob Bruce, FEC, P.Eng. Geomatics Support Engineer **bob.br...@gov.mb.ca Geospatial Technology Services Management **work # (204) 945-6636 GeoManitoba, Manitoba Conservation **FAX # (204) 945-1365 1007 Century Street, ** Winnipeg, Manitoba, Canada, R3H 0W4 ** ** Check out our digital maps at: http://mli2.gov.mb.ca/ ** and WMS: http://mlidata.gov.mb.ca/wms/request.aspx ** From: discuss-boun...@lists.osgeo.org [mailto:discuss-boun...@lists.osgeo.org] On Behalf Of Steve Stanton Sent: June-29-11 5:25 PM To: discuss@lists.osgeo.org Subject: [OSGeo-Discuss] Any projects dealing with spatial joins? I'm looking for a project that I could contribute to as a C# (maybe Java) developer. In particular, I'm looking for something that focuses on ways to perform flexible spatial joins with some degree of efficiency. The simplest case I'm thinking of is where someone picks 2 or more database tables (associated with location), and asks to see a combined table. No maps involved, just tables (with the overlapping ground area thrown in if we're dealing with a polygon/polygon overlay). A more complex case would be a situation where someone wants to isolate an area based on the attributes in database tables, but doesn't have any advance idea of where to start looking. For example, I'm looking for a combination of A+B+C that covers at least 1000 hectares, but I'm starting with a database that covers the whole world. So to obtain some measure of efficiency, it would presumably be nice to have access to related generalizations of the location data. Is anyone working on this sort of thing? Steve ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Any projects dealing with spatial joins?
SharpMap is an easy-to-use mapping library for use in web and desktop applications. It provides access to many types of GIS data, enables spatial querying of that data, and renders beautiful maps. The engine is written in C# and based on the .Net 2.0 framework. SharpMap is released under GNU Lesser General Public License. http://sharpmap.codeplex.com/ It has support for Spatialite - SQLite Spatial extension. http://blog.geomusings.com/2009/04/11/spatialite-provider-code-for-sharpmap-09/ Spatialite Cookbook http://www.gaia-gis.it/spatialite-2.4.0-4/spatialite-cookbook/index.html Noli On 6/30/11, Steve Stanton sstan...@btinternet.com wrote: I'm looking for a project that I could contribute to as a C# (maybe Java) developer. In particular, I'm looking for something that focuses on ways to perform flexible spatial joins with some degree of efficiency. The simplest case I'm thinking of is where someone picks 2 or more database tables (associated with location), and asks to see a combined table. No maps involved, just tables (with the overlapping ground area thrown in if we're dealing with a polygon/polygon overlay). A more complex case would be a situation where someone wants to isolate an area based on the attributes in database tables, but doesn't have any advance idea of where to start looking. For example, I'm looking for a combination of A+B+C that covers at least 1000 hectares, but I'm starting with a database that covers the whole world. So to obtain some measure of efficiency, it would presumably be nice to have access to relatedgeneralizations of the location data. Is anyone working on this sort of thing? Steve ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
